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Photonics – Chinese

Photonics – Chinese

Topics related to Lumerical and more, in Chinese language.

FDTD怎么看近场衍射图

    • z jn
      Subscriber

      想模拟超表面全息,原图如下

      然后用gs算法得到相位,根据几何相位用纳米砖排布了一个超表面

      看远场衍射图结果如下

      不知道为什么中间十字部分场强大,是光源的原因吗?然后也不知道怎么看近场衍射图

    • fengyang
      Subscriber

      边界条件是什么?可以参考这个案例设置一下:https://optics.ansys.com/hc/en-us/articles/360042251953-Binary-phase-grating-mask-for-controlling-light-intensity-profile

      近场衍射,可以直接通过常监视器得到,直接查看E就行了。

      • z jn
        Subscriber

        边界条件全是PML

        直接看近场的监视器的E结果就是这样的

    • fengyang
      Subscriber

      现在这个图形是按链接里的设置的吗?

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